2.8 inches LCD Color Display Screen, with image resolution of 240 x 320p, shows images clearly and smoothly. It is more convenient and quick to use. There are 3 replaceable screws to install the doorbell, you can choose the suitable one to use according to the thickness of your door. LED screen display automatically and take a photo when someone presses the doorbell, it can view visitors in real time and act as a home security monitor. Long press the scroll down button to set the automatic shutdown time, 15s, 25s, OFF. Long-press upturn key to delete all visitor records in the boot state. You can delete all visitor records by pressing the scroll down or upturn key when you look at the photos. Features: 2.8 inches LCD Color Display Screen, with image resolution of 240 x 320p, shows images clearly and smoothly. It is more convenient and quick to use. There are 3 replaceable screws to install the doorbell, you can choose the suitable one to use according to the thickness of your door. LED screen display automatically and take a photo when someone presses the doorbell, it can view visitors in real time and act as a home security monitor. Long press the scroll down button to set the automatic shutdown time, 15s, 25s, OFF. Long-press upturn key to delete all visitor records in the boot state. You can delete all visitor records by pressing the scroll down or upturn key when you look at the photos. There are 2 colors, silver and gold, you can choose your favorite one as your needs. Specifications: Material: ABS Color: Gold / Silver (Optional) Power Supply: 4 * 1.5V AAA Batteries (Not Included) Item Weight: 115g / 4oz Package Size: 14.5 * 11 * 7cm / 5.7 * 4.3 * 2.8in Package Weight: 240g / 8.5oz Package List: 1 * Doorbell 1 * LED Screen 1 * User Manual 3 * Screws